Steering Arm routine bring up

[cardiffrob]

I took mine off and polished the inner surface to reveal that the arm was cracked perhaps 25% of the way through at the surface. Not sure how far it had broken inside the structure.
It was a case of polish, hot oil, dry right off, clean surface, hit with a soft mallet to squish the oil out a bit and then dust with talc. Nice black line emerged. Maybe took 20 minutes to do.